but the crux to the question is where to put it, how to get there, and how much tighter to make it. This will all be taken care of in the kit.
IMO the light spring the recircs have actually allows the valve to be open under idle and cruise conditions. If this is the case, then air is actually flowing through the valves in the opposite direction thereby bypassing the turbos (not all the air the engine is ingesting, just some). This is why the recircs are vented into the filtered inlet pipe. Just up the spring pressure and viola a BOV that isn't obnoxious.